| Spectacle Pond | NH | Lake/Reservoir/Pond | Not Supporting | 1 | 27 |
| Spectacle Pond | NH | Lake/Reservoir/Pond | Not Supporting | 1 | 38 |
| Spectacle Pond - Circle Camp | NH | Lake/Reservoir/Pond | Not Supporting | 1 | 0.22 |
| Spectacle Pond - Groton Town Beach | NH | Lake/Reservoir/Pond | Not Supporting | 1 | 0.39 |
| Spencer Pond | NH | Lake/Reservoir/Pond | Not Supporting | 1 | 12 |
| Spit Brook | NH | Impoundment | Not Supporting | 1 | 1.42 |
| Spit Brook | NH | Impoundment | Not Supporting | 1 | 0.75 |
| Spit Brook | NH | Impoundment | Not Supporting | 1 | 1.00 |
| Spofford Lake | NH | Lake/Reservoir/Pond | Not Supporting | 4 | 730 |
| Spofford Lake - Access Rd Town Beach | NH | Lake/Reservoir/Pond | Not Supporting | 1 | 1.28 |
| Spofford Lake - Camp Spofford Beach | NH | Lake/Reservoir/Pond | Not Supporting | 1 | 1.38 |
| Spofford Lake - N Shore Rd Town Beach | NH | Lake/Reservoir/Pond | Not Supporting | 1 | 0.39 |
| Spofford Lake - Roads End Farm Beach | NH | Lake/Reservoir/Pond | Not Supporting | 1 | 1.38 |
| Spofford Lake - Wares Grove Town Beach | NH | Lake/Reservoir/Pond | Not Supporting | 2 | 0.85 |
| Spoons Pond Dam | NH | Impoundment | Not Supporting | 1 | 8.93 |
| Spoonwood Lake | NH | Lake/Reservoir/Pond | Not Supporting | 2 | 158 |
| Sportsman Pond - Kemp Brook | NH | Impoundment | Not Supporting | 1 | 152 |
| Spot Meadow Pond | NH | Lake/Reservoir/Pond | Not Supporting | 1 | 25 |
| Spring Brook - Cold Spring Brook | NH | Impoundment | Not Supporting | 1 | 1.50 |
| Spruce Pond | NH | Lake/Reservoir/Pond | Not Supporting | 2 | 22 |
| Spruce Pond - Spruce Pond Beach | NH | Lake/Reservoir/Pond | Not Supporting | 1 | 1.38 |
| Squam Lake | NH | Lake/Reservoir/Pond | Not Supporting | 5 | 6,774 |
| Squam Lake - Camp Deerwood Beach | NH | Lake/Reservoir/Pond | Not Supporting | 1 | 1.38 |
| Squam Lake - Camp Hale Beach | NH | Lake/Reservoir/Pond | Not Supporting | 1 | 1.38 |
| Squam Lake - Livermore Beach | NH | Lake/Reservoir/Pond | Not Supporting | 1 | 0.63 |
| Squam Lake - Moon Island South Beach | NH | Lake/Reservoir/Pond | Not Supporting | 1 | 0.23 |
| Squam Lake - Wister Point East Beach | NH | Lake/Reservoir/Pond | Not Supporting | 1 | 0.23 |
| Squam Lake - Wister Point West Beach | NH | Lake/Reservoir/Pond | Not Supporting | 1 | 0.23 |
| Squam Lake-Town Beach | NH | Lake/Reservoir/Pond | Not Supporting | 1 | 0.53 |
| Squam River - Ashland Paper Mill Middle Dam | NH | Impoundment | Not Supporting | 1 | 6.00 |
| Squam River - L W Packard Power Dam | NH | Impoundment | Not Supporting | 1 | 0.01 |
| Stanford Pond | NH | Lake/Reservoir/Pond | Not Supporting | 1 | 15 |
| Star Lake | NH | Lake/Reservoir/Pond | Not Supporting | 1 | 65 |
| Stark Pond | NH | Impoundment | Not Supporting | 1 | 14 |
| State Game Farm Pond | NH | Impoundment | Not Supporting | 1 | 0.20 |
| State Park Beach on Elm Brook | NH | Impoundment | Not Supporting | 3 | 1.38 |
| Stave Recreation Pond | NH | Impoundment | Not Supporting | 1 | 0.60 |
| Stearns Fire Pond Dam | NH | Impoundment | Not Supporting | 1 | 0.27 |
| Steels Pond | NH | Lake/Reservoir/Pond | Not Supporting | 1 | 36 |
| Stevens Brook - Rice Reservoir | NH | Impoundment | Not Supporting | 1 | 11 |
| Stevens Pond | NH | Lake/Reservoir/Pond | Not Supporting | 6 | 15 |
| Still Pond | NH | Lake/Reservoir/Pond | Not Supporting | 1 | 11 |
| Stinson Lake | NH | Lake/Reservoir/Pond | Not Supporting | 3 | 341 |
| Stinson Lake - Camp Happy T Ranch Beach | NH | Lake/Reservoir/Pond | Not Supporting | 1 | 1.38 |
| Stirrup Iron Brook - Stirrup Iron Pond | NH | Impoundment | Not Supporting | 1 | 3.00 |
| Stock Basin Dam | NH | Impoundment | Not Supporting | 1 | 2.00 |
| Stocker Pond | NH | Lake/Reservoir/Pond | Not Supporting | 3 | 75 |
| Stone Dam | NH | Impoundment | Not Supporting | 1 | 0.14 |
| Stone Pond | NH | Lake/Reservoir/Pond | Not Supporting | 2 | 78 |
| Stone Pond | NH | Lake/Reservoir/Pond | Not Supporting | 1 | 16 |